20874594

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 47416320

約数和(自身を除く): 26541726

約数列:

[1, 2, 3, 6, 13, 26, 31, 39, 62, 78, 89, 93, 97, 178, 186, 194, 267, 291, 403, 534, 582, 806, 1157, 1209, 1261, 2314, 2418, 2522, 2759, 3007, 3471, 3783, 5518, 6014, 6942, 7566, 8277, 8633, 9021, 16554, 17266, 18042, 25899, 35867, 39091, 51798, 71734, 78182, 107601, 112229, 117273, 215202, 224458, 234546, 267623, 336687, 535246, 673374, 802869, 1605738, 3479099, 6958198, 10437297, 20874594]

約数ペア:

[(1, 20874594), (2, 10437297), (3, 6958198), (6, 3479099), (13, 1605738), (26, 802869), (31, 673374), (39, 535246), (62, 336687), (78, 267623), (89, 234546), (93, 224458), (97, 215202), (178, 117273), (186, 112229), (194, 107601), (267, 78182), (291, 71734), (403, 51798), (534, 39091), (582, 35867), (806, 25899), (1157, 18042), (1209, 17266), (1261, 16554), (2314, 9021), (2418, 8633), (2522, 8277), (2759, 7566), (3007, 6942), (3471, 6014), (3783, 5518)]